Bezpieczeństwo Pracy i Ochrona Środowiska w Górnictwie (Work Safety and Environmental Protection in Mining) 2020/06
Category: BP i Ochr. Śr. w Górnictwie
Published: Tuesday, 23 June 2020 08:40
Written by Editor
- Impact of the length of the walls located in a strongly methane deposit on their mining capacity
The increase in the concentration of wall extraction in Polish hard coal mines was achieved as a result of wall elongation and the introduction of high-performance combines. The article discusses the issue of the formation of volumetric methane streams emitted to the wall environment in the light of the experience of the Central Mining Institute. The design of walls located in the vicinity of a strongly methane deposit should be preceded by a pre-emptive variant analysis of the size of streams of released methane, taking into account the parameters of the walls, methane saturation of the exploited and surrounding deposits and the speed of the combine during mining.
- Legal requirements for hazard monitoring systems in hard coal mines in Poland
The article presents legal aspects affecting the method of mining exploitation and ensuring security of the hard coal mine infrastructure and people working in them. The legal basis was adopted provisions and norms, the application of which results from the Geological and Mining Law Act, regarding natural hazards in mining plants.
- Restructuring of hard coal mining in the Wałbrzych Basin. History and future
In 1989, the first post-communist government introduced economic reform with several decisions based on strong monetarism and limited market freedom, which in particular concerned coal mines. Mining assumed the role of "Inflation anchor" thanks to coal prices lower than the costs of obtaining it. In the case of coal mining in Lower Silesia, its liquidation was determined by the appeal of the Mining Commission of NSZZ "Solidarność" of the Wałbrzych Land (from February 20, 1990) to close the mines due to threats to employees. The Wałbrzych mines were put into liquidation on January 1, 1991, and the Nowa Ruda mine in January 1992. The decision to close down the DZW mines was not accompanied by an in-depth analysis of its effects, despite the fact that they concerned the region where mining and enterprises working on 70-80% of the male workforce employed him, for example in the Nowa Ruda region! The process of mine closure was accompanied by the closure of plants from various industries. As a result, at the end of 1992 in the voivodeship about 50,000 were registered in Wałbrzych unemployed. The managers of Lower Silesian mines tried to limit the negative effects of the liquidation on the local labor market, from below, creating new business entities with the participation of assets and employees of mines. This process was to include stimulate the economic development of the region and minimize group layoffs of mine crews. In the years 1991–1994, 27 new business entities were created on the basis of the assets of the Wałbrzych KWK, in May 1995 employing approx. 2,000 people. On the basis of the KWK "Nowa Ruda" assets, for example, open-cast mining of rock raw materials and comprehensive wood production were started, as well as undertakings from the agri-food and tourist industries. Dramatic unemployment (over 30%) and huge emigration of the young generation contributed to the establishment of the Wałbrzych Special Economic Zone in 1997 by the government. Its success was determined by very favorable tax conditions and a valuable workforce for investors. Wałbrzych - the "capital" of the zone - however, is not able to take advantage of these opportunities, because the deindustrialization process led to a decrease in the number of inhabitants by about 30 thousand. and to an unfavorable age structure. The most dynamic part of society has left, so there is a shortage of hands to work and even very beneficial projects have no chance of implementation.
- The splendors and shadows of life in familok
- Stories written in chalk
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